Cre­at­ing an ex­per­i­men­tal, mod­u­lated drone

The MiniBrute’s new patch­bay is great for build­ing com­plex free-run­ning mod­u­lated drones

Future Music - - PRODUCER’S GUIDE TO -

01 >

Start with all con­trols set to zero, then raise the Square Wave slider. Since this is a drone patch, we want a con­tin­u­ous tone, so raise Att 2 > Amp to around 12 o’clock. Trig­ger a lower oc­tave note (some­where around C2) to cre­ate a low drone.

02 >

Let’s add move­ment. First we’ll use Pulse Width mod­u­la­tion. Set both Pulse Width and PWM to around the 1 o’clock mark. Now set LFO 1 to Free mode, se­lect a Sine wave and lower the rate. Let’s also lower the LPF cut­off to around 12 o’clock and add a bit of res­o­nance.

03 >

Let’s use the AD en­ve­lope to add move­ment to the fil­ter. Patch one end of a lead into the into the Amp’s AM in­put, but leave the other end un­patched. This breaks the rout­ing from the AD to the Amp. Then patch AD Out to Fil­ter FM and turn the fil­ter FM ro­tary two thirds to the right.

04 >

We want to cre­ate a loop­ing AD en­ve­lope to trig­ger the fil­ter. Set the en­ve­lope con­trols to Trig­ger and Loop. Now ad­just the At­tack and De­cay – this will change the rate of the mod­u­la­tion, like an LFO. We can take this fur­ther by mod­u­lat­ing the en­ve­lope’s de­cay.

05 >

Patch LFO 2 Out to AD’s De­cay in. Now ex­per­i­ment with dif­fer­ent en­ve­lope At­tack and De­cay set­tings, along with the rate and shape of the LFO. By do­ing this we can achieve some in­ter­est­ing rhyth­mic fil­ter mod­u­la­tion. For more un­pre­dictable re­sults, try us­ing the other LFO (or Osc 2) to also mod­u­late the AD’s at­tack.


Take this patch fur­ther by ex­per­i­ment­ing with other set­tings: try band pass or notch fil­ter modes in­stead of the LPF. Di­alling in some white noise works well, as does adding a se­cond os­cil­la­tor tuned to an oc­tave be­low Osc 1, or a fifth above it.

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